fixed paper tests based on pull request review
fixed paper tests based on pull request review

dart-archive/polymer_elements,ronlobo/polymer_elements,dart-archive/polymer_elements,dart-archive/polymer_elements,bwu-dart-contributing/polymer_elements,ronlobo/polymer_elements,ronlobo/polymer_elements,dart-archive/polymer_elements,bwu-dart-contributing/polymer_elements,bwu-dart-contributing/polymer_elements,dart-archive/polymer_elements,dart-archive/polymer_elements